Esteban José Miguel, Gutiérrez del Olmo Antonio, Baki Walid, Fernández Servando, Soria Maria Teresa, Díaz Mediavilla Joaquín, Ramírez Armengol Juan Andrés
Endoscopy Department, Hospital Clinico San Carlos, Madrid, Spain.
Gastrointest Endosc. 2005 Jun;61(7):928-30. doi: 10.1016/s0016-5107(04)02841-x.